OnClick Events for buttons in 3D Widgets not firing in Multiplayer

UE - Editor - UI Systems - Mar 6, 2017

OnClick Events for buttons in 3D Widgets not firing in Multiplayer. This issue only affects the button component as other Widget components that used the Left mouse button function as expected Regr ...

'r.StaticMeshLODDistanceScale' doesn't effect 'show LODColoration'

UE - Graphics Features - Jun 21, 2017

'r.StaticMeshLODDistanceScale' doesn't effect 'show LODColoration'. It does effect the actual performance of the LOD in the level but the LOD Coloration doesn't reflect the change. Licensee Descrip ...

[CrashReport] Linux Crash in FActiveSound::GetWorld()

UE - Platform - Linux - Aug 11, 2017

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: SIGSEGV: invalid attempt to write ...

Restore State for Make MovieSceneSequencePlaybackSettings Not Resetting Sequencer State Appropriately

UE - Anim - Sequencer - Oct 3, 2017

Restore State should have an affect on sequencer. The animation snaps back to its starting point even when this option is not set if played in PIE. If you drag in the level sequence in the editor an ...

Lightmass crashes when lighting is built with material that has "Cast Shadow as Masked"

UE - Graphics Features - Oct 4, 2017

Lightmass is crashing when using a material that has "Cast Shadow as Masked" set to true in its properties. Found in 4.18 P3 CL#3676890 Unable to reproduce in 4.16.3 CL# 3561208 and 4.17.2 CL#365 ...

OculusBoundaryComponent crashes when no HMD connected

UE - Platform - XR - Nov 7, 2017

Editor crashes when Oculus boundary component is added without a HMD connected. This was discovered while researching a separate bug report. A user stated that on a project that had been upgraded f ...

Can't set Event replication settings when delegate output pin is connected

UE - Gameplay - Blueprint Editor - Feb 19, 2018

User Reported Bug Replication Settings no longer editable after event delegate is connected. Doesn't seem to affect functionality, only UI. (replication settings stay as set before plugging delega ...

Packaging Fails Due to Camera Cut of Sequencer in 4.19

UE - Anim - Sequencer - Apr 10, 2018

Projects that worked normally in 4.18, failures occurred in 4.19. Resolve by replacing the contents of the LevelSequence that is the cause of the problem with the new asset.Perhaps a problem has occ ...

Curl Noise Force Not Applying to Niagara Emitter

UE - Niagara - Jul 30, 2018

Curl noise force will not affect a Niagara particle regardless of strength. Current work around is to disable then re-enable "apply forces" under "solve forces and velocity" Found in 4.20 CL# 4233 ...

Instance's parameter value for Child BP is not reflected in cooking if parent is nativized

UE - Gameplay - Blueprint - Jul 31, 2018

If an instance of a child BP has a non-default value for its parameters, that value will be ignored in the cooking process if the parent BP is nativized but the child is not and the default value fr ...